<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form method="post" action="login.php?id=1">
    <!--php获取各类型表单值-->
    用户名：<input type="text" name="username" /><br />
    密码：<input type="password" name="password" /><br />
    <input type="submit" value="登录" />
</form>

</body>
</html>